Ports used by DirSync for Azure AD
Know the ports used by DirSync.
John Savill
November 2, 2015
1 Min Read
Q. What ports does DirSync use for synchronization with Azure AD?
A. All communications for synchronization from AD to Azure AD use HTTPS (443) except for the Certificate Revocation List (CRL) download which uses HTTP (port 80). This is documented at https://support.office.com/en-us/article/Office-365-URLs-and-IP-address-ranges-8548a211-3fe7-47cb-abb1-355ea5aa88a2?ui=en-US&rs=en-US&ad=US#BKMK_Portal-identity.
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